- Length: 15 inches Wingspan: 36 inches
- Large diving duck
- Bill feathered to nostril
Adult male alternate:
- Pale green head with large white patch around eye
- Yellow bill
- Black underparts
- White upperparts
- Dark brown plumage with fine black barring
- Pale brown patch around eye
The adult male is not likely to be confused with any other duck. The dark
female is similar to other female eiders but note the patch around the eye and
the more extensive feathering on the bill.
Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.
Patuxent Bird Population Studies
Patuxent Bird Identification InfoCenter